Texas Instruments TPS62092RGTT

Overview

TPS62092RGTT from Texas Instruments is a 3-A synchronous step-down DC/DC converter with DCS-Control™ topology, fixed 2.5 V output, 2.5 V to 6 V input range, 2.8 MHz/1.4 MHz selectable switching frequency, and 95% peak efficiency - used in SSD power rails and processor core supplies where compact size and light-load efficiency are critical.

For engineers reviewing the TPS62092RGTT datasheet, TPS62092RGTT pinout, TPS62092RGTT application, or TPS62092RGTT equivalent, key selection criteria include its 2.5 V fixed output, QFN-16 (3 mm × 3 mm) package with exposed thermal pad, softstart control via external capacitor, power-good open-drain output, and hiccup-mode short-circuit protection.

Technical Context

The TPS62092RGTT implements DCS-Control™ - a hybrid regulation architecture combining voltage-mode stability with hysteretic-like transient response - enabling seamless PWM-to-power-save mode transition without output disturbance. It supports dual-frequency operation (2.8 MHz for small inductors/low ripple; 1.4 MHz for higher light-load efficiency) and integrates internal charge pump (CP/CN pins) for high-side FET gate drive.

Its functional modes include 100% duty-cycle low-dropout operation below ~2.7 V input, adjustable softstart (ISS = 7.5 µA), output discharge (200 Ω via VOS), and ratiometric voltage tracking via SS pin. Power sequencing is enabled through EN and PG pins, while thermal shutdown (150°C) and UVLO (2.2 V ±200 mV) ensure robust system-level protection.

Key Specifications

Pinout & Package

TPS62092RGTT uses a 16-pin QFN package (3.0 mm × 3.0 mm, 0.4 mm pitch) with exposed thermal pad connected to AGND - requires soldering for thermal performance and mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62091RGTT and TPS62093RGTT, the TPS62092RGTT provides optimal voltage alignment for 2.5 V I/O standards (e.g., PCIe Gen1/2, SATA, LVDS), balancing efficiency, thermal performance, and transient response without requiring external feedback components.

Availability

TPS62092RGTT is available at Aetrix Electronics and suitable for SSD power management, notebook processor I/O supplies, and industrial controller designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS62092RGTT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies - serving automotive, industrial, and computing markets with high-reliability silicon.

The TPS6209x product line delivers high-efficiency, small-footprint synchronous buck converters optimized for battery-powered and space-constrained applications - emphasizing DCS-Control™ transient performance, ultra-low quiescent current, and seamless power-save mode transitions.

FAQ

What is the recommended inductor value for TPS62092RGTT at 2.8 MHz operation?

The TPS62092RGTT datasheet specifies a 0.47 µH inductor for 2.8 MHz operation with 22 µF output capacitance. This value balances peak inductor current, output ripple (<10 mV_pp), and transient response. Using a 0.47 µH shielded power inductor with ≤30 mΩ DCR ensures >95% efficiency at 3 A and supports the device's 4.6 A current limit without saturation. Larger values increase ripple suppression but reduce transient speed.

Does TPS62092RGTT require external feedback resistors for its 2.5 V output?

No, the TPS62092RGTT does not require external feedback resistors. It is a fixed-output variant with internal resistor divider setting VOUT = 2.5 V - the FB pin is internally connected to the 0.8 V reference and may be tied to AGND for improved thermal performance. This eliminates layout sensitivity and component count versus adjustable versions like TPS62090RGTT.

How does the TPS62092RGTT handle short-circuit conditions?

The TPS62092RGTT employs hiccup-mode short-circuit protection: during a hard short, it limits peak switch current to ~1.5 A during startup and ~4.6 A in steady state, then cycles on/off with ~66 µs delay after 32 consecutive current-limit events. This prevents thermal runaway while allowing automatic recovery once the fault clears - unlike latch-off protection, it avoids manual reset requirements in field-deployed systems.

Can TPS62092RGTT operate with input voltage below 2.5 V?

No, the TPS62092RGTT has a minimum input voltage of 2.5 V per its recommended operating conditions. Its undervoltage lockout activates at ~2.2 V (with 200 mV hysteresis), disabling the device. Below 2.5 V, the internal charge pump cannot sustain high-side FET gate drive, and regulation fails. For sub-2.5 V inputs, consider TI's TPS6286x family or discrete LDO solutions.

What is the purpose of the VOS pin on TPS62092RGTT?

The VOS (Voltage Output Sense) pin on the TPS62092RGTT provides Kelvin sensing of the output rail and enables the internal 200 Ω discharge resistor during shutdown. Connecting VOS directly to the output capacitor's positive terminal improves regulation accuracy by rejecting PCB trace resistance, while the discharge path ensures rapid, controlled output voltage decay - critical for safe power sequencing in multi-rail systems.